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公开(公告)号：US09235003B2
公开(公告)日：2016-01-12
申请号：US13981285
申请日：2012-01-25
申请人： Takashi Saida , Yusuke Nasu , Takayuki Mizuno , Ryoichi Kasahara
发明人： Takashi Saida , Yusuke Nasu , Takayuki Mizuno , Ryoichi Kasahara
CPC分类号： G02B6/126 , G02B6/2793 , G02B6/2813 , G02B2006/12116 , G02B2006/1215
摘要： Provided is a waveguide-type polarization beam splitter in which deterioration of a polarization extinction ratio due to temperature change and wavelength change is suppressed. A groove is formed to extend across a pair of optical waveguide arms and two quarter wave plates are provided in the groove to extend respectively across the arms. Polarization axes of the quarter wave plates are orthogonal to each other. A first optical coupler which gives a phase difference of 0° or 180° between coupled or split light beams and a second optical coupler which gives a phase difference of 90° or −90° between coupled or split light beams are used in combination.
摘要翻译： 提供了抑制由于温度变化和波长变化引起的偏振消光比的劣化的波导型偏振光束分离器。 形成一个沟槽延伸穿过一对光波导臂，并且两个四分之一波片设置在凹槽中以分别延伸穿过臂。 四分之一波片的偏振轴彼此正交。 在耦合或分裂光束之间给出0°或180°的相位差的第一光耦合器和在耦合或分束光束之间给出90°或-90°的相位差的第二光耦合器组合使用。
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公开(公告)号：US20130301977A1
公开(公告)日：2013-11-14
申请号：US13981304
申请日：2012-01-25
申请人： Takashi Saida , Yusuke Nasu , Takayuki Mizuno , Ryoichi Kasahara
发明人： Takashi Saida , Yusuke Nasu , Takayuki Mizuno , Ryoichi Kasahara
IPC分类号： G02B6/27
CPC分类号： G02B6/2706 , G02B6/126 , G02B27/283
摘要： Provided is a waveguide-type polarization beam splitter in which deterioration of a polarization extinction ratio due to temperature change and wavelength change is suppressed. The waveguide-type polarization beam splitter includes: input optical waveguides; a first multimode interference optical coupler; a pair of optical waveguide arms; a second multimode interference optical coupler; and output optical waveguides. A quarter wavelength delay is provided in one of the pair of optical waveguide arms, a groove is formed to extend across both of the pair of optical waveguide arms, and two quarter wave plates are provided in the groove to extend respectively across the arms. Polarization axes of the respective quarter wave plates are orthogonal to each other.
摘要翻译： 提供了抑制由于温度变化和波长变化引起的偏振消光比的劣化的波导型偏振光束分离器。 波导型偏振分束器包括：输入光波导; 第一个多模干涉光耦合器; 一对光波导臂; 第二多模干涉光耦合器; 并输出光波导。 在一对光波导臂中的一个中提供四分之一波长延迟，形成一个沟槽以延伸穿过该对光波导臂的两个，并且两个四分之一波片设置在凹槽中以分别延伸穿过臂。 各个四分之一波片的偏振轴彼此正交。
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公开(公告)号：US20130301976A1
公开(公告)日：2013-11-14
申请号：US13981285
申请日：2012-01-25
申请人： Takashi Saida , Yusuke Nasu , Takayuki Mizuno , Ryoichi Kasahara
发明人： Takashi Saida , Yusuke Nasu , Takayuki Mizuno , Ryoichi Kasahara
IPC分类号： G02B6/126
CPC分类号： G02B6/126 , G02B6/2793 , G02B6/2813 , G02B2006/12116 , G02B2006/1215
摘要： Provided is a waveguide-type polarization beam splitter in which deterioration of a polarization extinction ratio due to temperature change and wavelength change is suppressed. A groove is formed to extend across a pair of optical waveguide arms and two quarter wave plates are provided in the groove to extend respectively across the arms. Polarization axes of the quarter wave plates are orthogonal to each other. A first optical coupler which gives a phase difference of 0° or 180° between coupled or split light beams and a second optical coupler which gives a phase difference of 90° or −90° between coupled or split light beams are used in combination.
摘要翻译： 提供了抑制由于温度变化和波长变化引起的偏振消光比的劣化的波导型偏振光束分离器。 形成一个沟槽延伸穿过一对光波导臂，并且两个四分之一波片设置在凹槽中以分别延伸穿过臂。 四分之一波片的偏振轴彼此正交。 在耦合或分裂光束之间给出0°或180°的相位差的第一光耦合器和在耦合或分束光束之间给出90°或-90°的相位差的第二光耦合器组合使用。
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公开(公告)号：US09323000B2
公开(公告)日：2016-04-26
申请号：US13981304
申请日：2012-01-25
申请人： Takashi Saida , Yusuke Nasu , Takayuki Mizuno , Ryoichi Kasahara
发明人： Takashi Saida , Yusuke Nasu , Takayuki Mizuno , Ryoichi Kasahara
CPC分类号： G02B6/2706 , G02B6/126 , G02B27/283
摘要： Provided is a waveguide-type polarization beam splitter in which deterioration of a polarization extinction ratio due to temperature change and wavelength change is suppressed. The waveguide-type polarization beam splitter includes: input optical waveguides; a first multimode interference optical coupler; a pair of optical waveguide arms; a second multimode interference optical coupler; and output optical waveguides. A quarter wavelength delay is provided in one of the pair of optical waveguide arms, a groove is formed to extend across both of the pair of optical waveguide arms, and two quarter wave plates are provided in the groove to extend respectively across the arms. Polarization axes of the respective quarter wave plates are orthogonal to each other.
摘要翻译： 提供了抑制由于温度变化和波长变化引起的偏振消光比的劣化的波导型偏振光束分离器。 波导型偏振分束器包括：输入光波导; 第一个多模干涉光耦合器; 一对光波导臂; 第二多模干涉光耦合器; 并输出光波导。 在一对光波导臂中的一个中提供四分之一波长延迟，形成一个沟槽以延伸穿过该对光波导臂的两个，并且两个四分之一波片设置在凹槽中以分别延伸穿过臂。 各个四分之一波片的偏振轴彼此正交。
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公开(公告)号：US20120328236A1
公开(公告)日：2012-12-27
申请号：US13528476
申请日：2012-06-20
申请人： Yusuke Nasu , Ryoichi Kasahara , Ikuo Ogawa , Kenya Suzuki , Fumihiro Ebisawa
发明人： Yusuke Nasu , Ryoichi Kasahara , Ikuo Ogawa , Kenya Suzuki , Fumihiro Ebisawa
IPC分类号： G02B6/12
CPC分类号： G02B6/4267 , G02B6/12002 , G02B6/12004 , G02B6/12033 , G02B6/3508 , G02B6/4292 , G02B2006/12159
摘要： In an integrated optical receiver or transmitter, both the displacement of an optical axis caused by thermal changes and the property degradation of an optical functional circuit are inhibited. A planar lightwave circuit having a substrate and a waveguide-type optical functional circuit formed thereon composed of a material different from that of the substrate, and includes a waveguide region formed only of an optical wavelength that is in contact with a side forming an emission-end face of the optical waveguide for propagating the light emitted from the optical functional circuit or an incident-end face of an optical waveguide for propagating the light incident on the optical functional circuit. The planar lightwave circuit is fixed to a fixing mount only at the bottom of the substrate where the waveguide region is formed.
摘要翻译： 在集成光接收器或发送器中，由热变化引起的光轴的位移和光功能电路的特性劣化都被抑制。 一种平面光波电路，具有由不同于基板的材料形成的基板和波导型光功能电路，并且包括仅形成与形成发光二极管的一侧接触的光波长的波导区域， 用于传播从光学功能电路发射的光或光波导的入射端面，用于传播入射在光学功能电路上的光的光波导的端面。 平面光波电路仅在形成波导区域的基板的底部固定到固定座。
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公开(公告)号：US09116317B2
公开(公告)日：2015-08-25
申请号：US13528476
申请日：2012-06-20
申请人： Yusuke Nasu , Ryoichi Kasahara , Ikuo Ogawa , Kenya Suzuki , Fumihiro Ebisawa
发明人： Yusuke Nasu , Ryoichi Kasahara , Ikuo Ogawa , Kenya Suzuki , Fumihiro Ebisawa
CPC分类号： G02B6/4267 , G02B6/12002 , G02B6/12004 , G02B6/12033 , G02B6/3508 , G02B6/4292 , G02B2006/12159
摘要： In an integrated optical receiver or transmitter, both the displacement of an optical axis caused by thermal changes and the property degradation of an optical functional circuit are inhibited. A planar lightwave circuit having a substrate and a waveguide-type optical functional circuit formed thereon composed of a material different from that of the substrate, and includes a waveguide region formed only of an optical wavelength that is in contact with a side forming an emission-end face of the optical waveguide for propagating the light emitted from the optical functional circuit or an incident-end face of an optical waveguide for propagating the light incident on the optical functional circuit. The planar lightwave circuit is fixed to a fixing mount only at the bottom of the substrate where the waveguide region is formed.
摘要翻译： 在集成光接收器或发送器中，由热变化引起的光轴的位移和光功能电路的特性劣化都被抑制。 一种平面光波电路，具有由不同于基板的材料形成的基板和波导型光功能电路，并且包括仅形成与形成发光二极管的一侧接触的光波长的波导区域， 用于传播从光学功能电路发射的光或光波导的入射端面，用于传播入射在光学功能电路上的光的光波导的端面。 平面光波电路仅在形成波导区域的基板的底部固定到固定座。
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公开(公告)号：US08588560B2
公开(公告)日：2013-11-19
申请号：US13378034
申请日：2010-07-09
申请人： Yohei Sakamaki , Takashi Goh , Toshikazu Hashimoto , Yusuke Nasu , Kuninori Hattori , Hiroshi Takahashi
发明人： Yohei Sakamaki , Takashi Goh , Toshikazu Hashimoto , Yusuke Nasu , Kuninori Hattori , Hiroshi Takahashi
CPC分类号： H04B10/611 , H04B10/60 , H04B10/613 , H04B10/614
摘要： An optical 90-degree hybrid circuit includes a first demultiplexing optical coupler having two or more first input ports and two or more first output ports, a second demultiplexing optical coupler having two or more second input ports and two or more second output ports, two first arm waveguides connected to the first output ports, two second arm waveguides connected to the second output ports, a 90-degree phase shift section installed in one of the four arm waveguides, a first optical coupler and a second optical coupler connected to the first arm waveguides and the second arm waveguides, a first optical waveguide for connecting an optical splitter and the first input ports, and a second optical waveguide for connecting the optical splitter and the second input ports, wherein an optical length of the first optical waveguide is different from that of the second optical waveguide.
摘要翻译： 光学90度混合电路包括具有两个或多个第一输入端口和两个或更多个第一输出端口的第一解复用光耦合器，具有两个或多个第二输入端口和两个或更多个第二输出端口的第二解复用光耦合器，两个第一输出端口 连接到第一输出端口的臂波导，连接到第二输出端口的两个第二臂波导，安装在四个臂波导之一中的90度相移部分，连接到第一臂的第一光耦合器和第二光耦合器 波导和第二臂波导，用于连接光分路器和第一输入端口的第一光波导和用于连接光分路器和第二输入端口的第二光波导，其中第一光波导的光学长度不同于 第二光波导的。
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公开(公告)号：US20120093457A1
公开(公告)日：2012-04-19
申请号：US13378034
申请日：2010-07-09
申请人： Yohei Sakamaki , Takashi Goh , Toshikazu Hashimoto , Yusuke Nasu , Kuninori Hattori , Hiroshi Takahashi
发明人： Yohei Sakamaki , Takashi Goh , Toshikazu Hashimoto , Yusuke Nasu , Kuninori Hattori , Hiroshi Takahashi
IPC分类号： G02B6/12
CPC分类号： H04B10/611 , H04B10/60 , H04B10/613 , H04B10/614
摘要： An optical 90-degree hybrid circuit includes a first demultiplexing optical coupler having two or more first input ports and two or more first output ports, a second demultiplexing optical coupler having two or more second input ports and two or more second output ports, two first arm waveguides connected to the first output ports, two second arm waveguides connected to the second output ports, a 90-degree phase shift section installed in one of the four arm waveguides, a first optical coupler and a second optical coupler connected to the first arm waveguides and the second arm waveguides, a first optical waveguide for connecting an optical splitter and the first input ports, and a second optical waveguide for connecting the optical splitter and the second input ports, wherein an optical length of the first optical waveguide is different from that of the second optical waveguide.
摘要翻译： 光学90度混合电路包括具有两个或多个第一输入端口和两个或更多个第一输出端口的第一解复用光耦合器，具有两个或多个第二输入端口和两个或更多个第二输出端口的第二解复用光耦合器，两个第一输出端口 连接到第一输出端口的臂波导，连接到第二输出端口的两个第二臂波导，安装在四个臂波导之一中的90度相移部分，连接到第一臂的第一光耦合器和第二光耦合器 波导和第二臂波导，用于连接光分路器和第一输入端口的第一光波导和用于连接光分路器和第二输入端口的第二光波导，其中第一光波导的光学长度不同于 第二光波导的。
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公开(公告)号：US08150219B2
公开(公告)日：2012-04-03
申请号：US12521867
申请日：2007-12-27
申请人： Yusuke Nasu , Manabu Oguma , Yasuaki Hashizume , Yasuyuki Inoue , Hiroshi Takahashi , Kuninori Hattori , Toshikazu Hashimoto , Yohei Sakamaki
发明人： Yusuke Nasu , Manabu Oguma , Yasuaki Hashizume , Yasuyuki Inoue , Hiroshi Takahashi , Kuninori Hattori , Toshikazu Hashimoto , Yohei Sakamaki
CPC分类号： G02B6/12007 , G02B6/1228 , G02B6/126 , G02B2006/12116 , G02B2006/12159
摘要： In an optical interferometer, polarization dependence attributable to the optical path difference has conventionally been eliminated by inserting a half-wave plate at the center of the interferometer. However, light induced by polarization coupling produced in directional couplers used in the optical interferometer causes interference having different interference conditions from those of the normal light. Polarization rotators that effect any one of 90° rotation and −90° rotation of all states of polarization of incoming light are inserted in the optical interferometer, and thereby the interference conditions of light induced by polarization coupling are made the same as those of the normal light. Each of the polarization rotators is implemented by using two half-wave plates and by varying an angle of combination of these half-wave plates. Alternatively, each of the polarization rotators is implemented through a combination of one half-wave plate and a waveguide having birefringence properties.
摘要翻译： 在光干涉仪中，通过在干涉仪的中心插入半波片，传统上消除了归因于光程差的偏振度依赖性。 然而，由光干涉仪中使用的定向耦合器产生的偏振耦合引起的光引起与正常光的干扰条件不同的干扰。 将影响入射光的所有偏振态的90°旋转和-90°旋转中的任何一个的极化旋转体插入到光学干涉仪中，由此使由偏振耦合引起的光的干涉条件与正常的相同 光。 每个偏振旋转器通过使用两个半波片并通过改变这些半波片的组合角来实现。 或者，每个偏振旋转器通过一个半波片和具有双折射性质的波导的组合来实现。
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公开(公告)号：US20100119189A1
公开(公告)日：2010-05-13
申请号：US12528933
申请日：2009-01-09
申请人： Yusuke Nasu , Kuninori Hattori , Toshikazu Hashimoto , Yohei Sakamaki , Hiroshi Takahashi , Yasuyuki Inoue
发明人： Yusuke Nasu , Kuninori Hattori , Toshikazu Hashimoto , Yohei Sakamaki , Hiroshi Takahashi , Yasuyuki Inoue
CPC分类号： H04B10/676 , G02B6/12007 , G02B6/12011 , G02B6/12028 , G02B6/126 , G02B6/29355 , G02B6/29397 , G02B2006/12116 , G02B2006/12147 , G02B2006/1215
摘要： A demodulator is provided for a multilevel differential phase shift keyed signal, capable of eliminating polarization dependence due to birefringence and polarization coupling-induced light resulting from a waveguide structure, and also, polarization dependence due to dynamic birefringence produced at the time of driving a variable phase adjuster. The demodulator is configured of an optical delay line interferometer of a waveguide interference type. The S/N ratio of a demodulated signal in the demodulator formed by the optical delay line interferometer can be also improved. Further, both the polarization dependence and the temperature dependence of the optical delay line interferometer can be reduced. The disposition of a polarization converter and groves filled with a temperature compensation material makes it possible to provide a circuit configuration suitable for eliminating the polarization dependence and the temperature dependence of the optical delay line interferometer.
摘要翻译： 提供了一种用于多电平差分相移键控信号的解调器，其能够消除由于波导结构产生的双折射和偏振耦合引起的光的偏振依赖性，以及由驱动变量时产生的动态双折射引起的偏振相关性 相位调节器。 解调器由波导干涉型光延迟线干涉仪构成。 由光延迟线干涉仪形成的解调器中的解调信号的S / N比也可以提高。 此外，可以减少光学延迟线干涉仪的偏振相关性和温度依赖性。 充满温度补偿材料的偏振转换器和园林的布置使得可以提供适于消除光学延迟线干涉仪的偏振依赖性和温度依赖性的电路配置。
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